Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES
Net loss	$ (8,551,212)	$ (1,261,022)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	6,864,670	5,792,366
(Gain) loss on disposal of equipment	(242,244)	8,160
Deferred income taxes	(3,937,404)	(399,436)
Stock-based compensation	661,924	617,530
Stock issued for services	1,714	10,380
Amortization of Debt Issuance Costs	152,724	125,404
Provision for bad debt expense	156,978	135,434
Changes in operating assets and liabilities
Accounts receivable	2,066,168	7,507,005
Inventories	(99,082)	81,784
Prepaid expenses and other current assets	261,349	352,618
Income taxes receivable	(1,400)	1,553,588
Other assets	26,250	93,402
Accounts payable and accrued liabilities	642,740	(2,432,304)
Net cash provided by (used in) operating activities	(1,996,828)	12,143,762
INVESTING ACTIVITIES
Purchases of property and equipment	(5,165,015)	(4,533,352)
Proceeds from insurance claim	280,660
Proceeds from disposal of equipment	138,629	27,169
Net cash used in investing activities	(4,745,726)	(4,506,183)
FINANCING ACTIVITIES
Gross proceeds from stock issuance	5,175,000
Stock issuance costs and registration fees	(758,796)
Proceeds from revolving credit facility	16,367,049	16,767,204
Payments related to revolving credit facility	(13,892,776)	(24,695,000)
Repayment on long-term debt	(281,896)	(237,720)
Payment of debt issuance costs for credit facility	(50,000)	(100,000)
Proceeds from exercise of warrants		77,100
Proceeds from exercise of stock options		198,285
Excess tax benefits from exercise of options and warrants		203,231
Net cash provided by (used in) financing activities	6,558,581	(7,786,900)
Net decrease in Cash and Cash Equivalents	(183,973)	(149,321)
Cash and Cash Equivalents, beginning of period	804,737	954,058
Cash and Cash Equivalents, end of period	620,764	804,737
Supplemental cash flow information:
Cash paid for interest	1,677,077	814,013
Cash paid (refund) for income taxes	14,474	(1,742,057)
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Cashless exercise of stock options and warrants		$ 2,751